Improvement in pocket-knives



' the handle, and to have two blades formed of Vone piece handle h, andto be so arranged as to be slid'out of State/ @wat Leners Patent No.91,693, dated June 22, 1869.

IMPROVEMENT IN POCKET-KNIVES.

The Schedule referred vto in these Letters Patent and making part of thesama.

To all whom it may concern.-

Be it known that I, ADDISON G. WA'rnnHoUsn, of theoity and county of SanFrancisco, in the State of California, have invented a new and usefulImprovement on Pocket-Knives.

The nature of my invention consists in forming the` knife so as to havethe blades slide out of the ends of of steel or metal.

'lo enable others skilled in the art to make and use my invention, Iwill proceed to describe its construction and operation.

, The blades b (see Figures 2, 3, and 4,) are to beformed on each end ofa piece of steel the length of the handle h.

The cutting-edge of each blade, e, is to be formed on sides opposite toone another. (See fig. 4.)

Said blades are to be encased or enclosed in the their respective endsof the handle h.

The object of having the edge of eaeli blade -xed on the side Oppositeto the other-(see ilgs. 2, 3, and 4,) is, that when one blade is out,(see lig. 2,) and when the pressure, when cutting, is placed upon theouter blade, the other blade, that. remains in the handle, forms, withits bac-k, a leverage for the outer blade. (Small blade, fig. 2.)

*The case or handle h is to he formed so that bladepiece (lig. 4)\willfit closely inside of it, and that the centre c of said blade-piece canbe slid from one end of said handle to the other, so that the blades bcan be slid ont at their respective ends of the handle h.

In the sides of said handle I have a slot arranged,

(see` S, Figures 1 and 2,) running nearly the whole length of saidhandle, in which a thumb-piece, T, (see.

1 and'2,) is to be arranged, so that it can slide all along the slot S.

Said thumb-piece 'l is to be att-ached to the Centre of saidblade-piece, at c, so that the blades can be slid out and in, by forcingthe thumb-piece C, figs. l and 2, along th'e slot S, figs. l and 2.

In the slot I have a notch placed at each end, and one near the centre,at n, (see figs. l and 2,) into each ofwhich the thumb-piece l issprung, by a spring inside of the handle. v

lVhen said blades are slid along, so that said thumbpiece 'I reacheseither of said notches, it is caught by them, and the blades are heldrrnly in their place.

What I claim as my invention,and desire to secure by Letters Patent, is-

The forming of two blades On one piece of steel or metal, with theiredges .upon opposite Sides, so that the back of one will form a leveragefor the other, and the mode of sliding the said blades out of the endsof the handle, in the manner and for the purpose substantially as aboveset forth.

v A. G. WATERHOUSE.

Witnesses:

JAMES M. LEWIS, J. H. (SfIzINDLEY.`

